22
8.4.7 Requirements for power cord connection
Fig. 8-12 Requirements for power cord connection
L1 L2 L3 N
L1
L2 L3
N
L1 L2 L3 N
L1
L2 L3
N
Wrong
Correct
NOTE
Please use the round-type terminal with correct specifications to
connect the power cord.
8.4.8 Function of terminals
As shown in the figure below, the uint communication signal wire
is connected to the terminal block XT2 at 5(X), 6(Y) and 7(E),
and the wired controller signal wire is connected at 8(X), 9(Y)
and 10(E) inside the electric control box. For specific wiring, see
chapter 8.4.13.
XT2
Uint communication
The wired controller
communication
Fig. 8-13 Wiring of unit communication and
the wired controller communication
When the water pump and auxiliary heater are added externally,
a 3-phase contactor must be used for control. The model of
contactor is subject to the power of water pump and heater power.
The contactor coil is controlled by the main control board. See the
figure below for coil wiring. For specific wiring, see chapter 8.4.14 .
The user can connect an ac light to monitor the state of
compressor.When the compressor is operating,the light will be
powered on.
The wiring of water pump and pipeline auxiliary heater and ac
light of the state of compressor is as follows.
HEAT1 HEAT2 COM COMP-STATE PUMP
Blue
Black
Brown
8.4.9 Wiring of “ON/OFF” weak electric port
The remote function of “ON/OFF” must be set by DIP switch .The
remote function of “ON/OFF” is effective when S5-3 is chosen
ON, at the same time, the wired controller is out of control.
Corresponding parallel connect the “ON/OFF” port of the main
unit’s electric control box,then, connect the “ON/OFF” signal
(provide by user) to the “ON/OFF” port of main unit as follows.
The remote function of “ON/OFF” must be DIP switch set.
Wiring method: Shorting the terminal block XT2 at 15 and 24
inside the electric control box to enable the remote function of “ON/
OFF”
220-240V~
50Hz
L1/L2/L3
N
N SV2 NO NC N
XT1
SV1
Coil of
3 phase
AC contactor
Coil of
3 phase
AC contactor
Max voltage:240VAC
Max current:5A
Fig. 8-14 Wiring of water pump and pipeline auxiliary heater
and ac light of the state of compressor(only for
KEM-30 DRS4.1 KH and KEM-60 DRS4.1 KH )
Fig. 8-15 Wiring of water pump and pipeline auxiliary heater
and ac light of the state of compressor(only for
KEM-90 DRS4 KH)
220-240V~
50Hz
L1/L2/L3
N
SV1
HEAT1
CN26(Main board) CN33(Main board) CN25(Main board) CN27(Main board)
HEAT2 COM COMP-STATE PUMP
Blue
Black
Brown
Coil of
3 phase
AC contactor
Coil of
3 phase
AC contactor
Max voltage:240VAC
Max current:5A
NO NC N
HEAT1 HEAT2 COM COMP STATE PUMP
Summary of Contents for KEM-90
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